Hybrid optical fiber/copper coaxial data transmission cable

• US 5,539,851 A
• Filed: 04/17/1995
• Issued: 07/23/1996
• Est. Priority Date: 04/17/1995
• Status: Expired due to Fees

• Current Assignee: Khamsin Technologies LLC
• Original Assignee: Yankee Audio Corp.
• Inventors: Taylor, John A., Bartlett, Robert C.
• Primary Examiner(s): NGO, HUNG NHAT
• Application Number:
  US08/422,804
• Time in Patent Office: 463 Days
• Field of Search: 174/102 R, 174/103, 174/105 R, 174/107, 174/113 R, 174/36, 385/100-113
• US Class Current: 385/101
• CPC Class Codes: G02B 6/4416 Heterogeneous cables
• CPC Class Codes: H01B 11/1891 comprising auxiliary conductors

Abstract

A hybrid cable is implemented by a concentric arrangement of a central optical fiber encased by a sleeve of Kevlar and an outer jacket of FEP(Teflon) insulation and surrounded by an annular (hollow) electrical conductor consisting of two rows of 16 insulated strands each of 33 AWG. A second conductor made of braided copper strands concentrically surrounds the first conductor but is separated therefrom by a layer of FEP insulation. Another layer of insulation surrounds the second conductor.

Claims

1. A hybrid cable consisting of a concentric arrangement of:

a central optical fiber,

a first inner sleeve of "Kevlar" circumscribing the central optical fiber,

a jacket of fluoropolymer resin circumscribing the "Kevlar" sleeve, a first set of electrical conductors formed of two rows of 16 strands each of #33 AWG wire circumscribing the jacket,

a second inner sleeve of fluoropolymer resin circumscribing the first electrical conductor,

a second set of electrical conductors formed of braided copper wires circumscribing the second inner sleeve,

an outer sleeve of insulation circumscribing the second electrical conductor.

2. A hybrid data transmission cable for the combined transmission in a common cable of digital data signals and digital video signals and video telephone signals and analog signals in the 1 GHz range comprising in a concentric arrangement:

a central optical fiber encased in a first plastic sleeve;

a first set of electrical conductors of a pair of rows of #33 AWG strands, each of said strands being surrounded by an insulation layer;

a second plastic sleeve;

a second set of electrical conductors braided copper strands;

and a third plastic sleeve.

3. A coaxial cable for the transmission of both electrical and optical energy comprising:

a unitary central axial fiber optic conductor means and a "Kevlar" sleeve surrounding the central axial fiber optic conductor means;

a jacket of fluoropolymer resin serving as insulation and protection and disposed in outer circumscribing relation to the "Kevlar" sleeve;

a first set of electrical conductors disposed in annular fashion around the peripheral surface of the fluoropolymer resin jacket for application of a first electrical signal and comprising of two rows of #33 AWG strands each row comprising sixteen #33 AWG strands, each of said strands is surrounding by an insulation layer;

a first dielectric medium surrounding the first set of electrical conductors and defining an outer surface;

a second set of electrical conductors in the form of braided fine copper wires concentrically surrounding the first dielectric medium, and an outermost dielectric medium surrounding the second set of electrical conductors.

4. A coaxial cable for the transmission of both electrical and optical energy comprising:

a unitary central axial fiber optical conductor means and a "Kevlar" sleeve surrounding the central axial fiber optic conductor means;

a jacket of fluoropolymer resin serving as insulation and protection and disposed in outer circumscribing relation to the "Kevlar" sleeve;

a first set of electrical conductors disposed in annular fashion around the peripheral surface of the fluoropolymer resin jacket for application of a first electrical signal;

a first dielectric medium surrounding the first set of electrical conductors and defining an outer surface;

a second set of electrical conductors in the form of braided fine copper wires concentrically surrounding the first dielectric medium, and an outermost dielectric medium surrounding the second set of electrical conductors.